Product Information

Z22, Z23, Z24:   Packaged Cooling System Up to 40 Ton Tonnage Capacities 310 to 502 Mbh Efficiency 10.5 EER (25 Ton) and 10.0 EER (30 & 40 Ton) Warranty Compressor - 1 Year Heat Exchanger - 10 Years Other parts - 1 Year Millennium® Large Commercial Rooftops R410A 25, 30 and 40 Tons York Millennium® Rooftops offer the flexibility to meet the requirements of a wide range of installations. They’re built to last and priced to compete. Numerous options can be added to the base unit to satisfy almost any specifications —from the simple to complex. Units are offered in the following combinations: • Cooling Only • Cooling/Gas Heating (Natural Gas or Propane) • Cooling/Electric Heat • Cooling/Hot Water Heat • Cooling/Steam Heat In addition, these units are designed with the flexibility to support the industry’s best practices for indoor air quality. All these features are available on 25, 30- and 40-ton single-package units that are easy to install, use, and maintain. Factory-installed options, such as economizers, power exhaust, high-efficiency motors or filtration, barometric damper relief, 0° low ambient, high-capacity evaporator coils, and single-unit disconnect, add to the versatility of these self-contained rooftops. Special Benefits Environmentally friendly R410A refrigerant Double-wall construction with galvanized sheet metal liner to protect against microbial growth. Rigid sheet metal inner liner to keep insulation out of the air stream. Sloped drain pan protects against pan corrosion and bacterial growth. Pitched roof design for natural drainage. Scroll compressors for efficiency and durability. Multiple refrigeration circuits for greater turndown and the best unloading capabilities in the industry. Extended flue connection on gas units to eliminate the possibility of corrosion in the furnace heat exchanger. Constant air volume or Variable air volume by inlet guide vanes or variable frequency drive. Full range of airflows and static pressures to meet most every application requirement. Single power point connection for gas and electric. Simple controls that are easy to understand, apply, and update. Rain hoods rotate into place—an easy one-person job. Easy service access with hinged and latched doors on both sides of the unit. Durable finish, made of powder-painted, galvanized steel to meet 1000-hour salt-spray test demands. Optional head pressure control where mechanical cooling is required below 40°F; allows compressor operation down to 0°F. Optional high-efficiency motors are easily installed to meet tighter codes. Complete line of factory-installed accessories, including economizers, electric heat, power exhaust, a variety of blower horsepower ratings, and more. Standard SIMPLICITY® ELITE™ control system provides unitary BAS capabilites such as monitoring, scheduling, local and remote setpoint adjustment. Offers the open communication protocol of ModBUS RTU. Optional Systhesys® Unitary Control system. Designed for stand-alone operation or connection via N2 or LON connection for BAS compatibility